Abstract: A moisture curable composition is claimed comprising (a) a condensation product of a polyacid chloride with an alkylene or oxyalkylene polymer having substituent groups condensible therewith with an organosilicon compound having at least one silicon-bonded group --R(NHR.sup.1).sub.m NH.sub.2 e.g. a material of the general formula ##STR1## wherein each R may be the same or different and represent a linking group, each R' represents a group --R(NHR.sup.1).sub.m NH.sub.2, a hydrolysable group R", a group R'" or a group R'Si(OSiR.sup.1.sub.2).sub.s --O-- where R'" is a hydrocarbon group, m is from 0 to 10 and s is from 0 to 1500 and (b) a curative. Preferred materials are amino silanes in which R" is an oximo, alkoxy, alkenyloxy or alkoxyalkoxy group, --R(NHR.sup.1).sub.m NH.sub.2 is aminopropyl and m is 0. The aminosilane is preferably .gamma.-aminopropyltrimethoxysilane or .gamma.-aminopropyltriethoxysilane and the organic polymer is a polyoxyalkylene glycol.

Abstract: A non-yellowing one-package, RTV, silicone elastomer composition is prepared and has properties such that prior to its cure, it is highly workable and that during its cure does not crack or fissure even when deformed by external force. These one-package, room-temperature-vulcanizable, silicone elastomer compositions comprise (A) diorganopolysiloxane endblocked by oxime group-containing organic radicals where at least 50 mole of the end groups contain alkenyl radicals, (B) oxime group-containing organosilane where no more than 50 mole % of the silane molecules contain alkenyl, and (C) inorganic filler.

Abstract: A method for the preparation of a non-yellowing one-package room-temperature-curable silicone elastomer composition that prior to its cure is highly workable and that during its cure does not crack or fissure even when deformed by an outside force. The method comprises as step one mixing of silanol-containing polydiorganosiloxane and inorganic filler; as step two admixing vinyltrioximosilane into the mixture of step one; and as step three admixing an alkyltrioximosilane into the mixture of step two.

Abstract: Polymers are prepared by reaction between a polymer prepared by reaction between (A) an OH terminated reaction product of a polyacid chloride and an organic polymer having substituent groups condensable therewith and (B) a silane or siloxane having a group capable of reaction with substituent groups of the reaction product (A). Reaction product (A) is preferably derived from a polyoxyalkylene glycol and a diacid chloride. Silane or siloxane (B) is preferably an epoxy silane and preferably has at least one silicon- bonded hydrolysable group. Preferred polymers are employed in moisture curable composition, e.g. as sealants.

Abstract: An aqueous silicone emulsion which yields an elastomer upon removal of the water comprises a polydiorganosiloxane having alkoxysilyl endblocking groups with at least two alkoxy groups attached to the silicon atom, titanium catalyst, and optionally, a filler.

Abstract: Curable organopolysiloxane composition that undergoes a uniform curb by both condensation and addition reactions without being subject to cure inhibition by cure inhibitors and thereby produces cured silicone that is strongly adherent to any of various substrates residing in contact with the composition during its cure. The curable organopolysiloxane composition is a mixture of organopolysiloxane with at least 2 silicon-bonded alkoxy groups in each molecule and organopolysiloxane with at least 2 silicon-bonded lower alkenyl groups in each molecule, an organopolysiloxane containing at least 2 silicon-bonded hydrogen atoms in each molecule, an alkoxysilane of the formula R.sup.1.sub.x Si(OR.sup.2).sub.(4-x) where R.sup.1 is a monovalent hydrocarbon group, R.sup.2 is alkyl or alkoxyalkyl, and x is 0, 1, or 2 or partial hydrolysis condensate thereof, an organozirconium compound or an organoaluminum compound, and a hydrosilylation reaction catalyst in a catalytic quantity.

Abstract: A device for continuously mixing liquid and powder is able to provide lower apparent viscosities for liquid-powder mixtures. The device allows introduction of a fresh supply of liquid in a second stage mixing chamber where a rotating disk further creates subdividing effects. This second stage mixing chamber contains scrapers with some having notches which help improve the powder dispersion in the resulting mixture.

Abstract: A hollow, glass, building block contains elastomeric or gel-like cured polydiorganosiloxane composition product being optically at least translucent and present in an amount sufficient to fill completely the available interior volume of the building block providing a space adjacent to the cured product to permit expansion of the cured product relative to the block during changes in temperature. This glass building block has improved fire resistance.

Abstract: Imidazolinyl-functional organosiloxanes in which an aliphatically unsaturated monovalent hydrocarbon radical is bonded at the 2-position of the imidazoline ring, have from 2 to 1,100 siloxane units where at least one siloxane unit has an imidazolinyl radical of the following general formula bonded to silicon ##STR1## wherein R.sup.1 is a C.sub.1 to C.sub.50 divalent hydrocarbon radical, each R.sup.2 is hydrogen atom or a C.sub.1 to C.sub.50 monovalent hydrocarbon radicals, and R.sup.3 is a C.sub.2 to C.sub.50 aliphatically unsaturated monovalent hydrocarbon radical, and method for the preparation thereof by a dehydration reaction of an amino-functional organosiloxane and an aliphatically unsaturated monocarboxylic acid.

Abstract: Bubble formation observed when curing a sealant composition on a hot porous substrate is reduced where the room temperature vulcanizable silicone sealant composition comprises a polydiorganosiloxane, a crosslinker with silicon-bonded alkoxy groups, filler, and a titanium catalyst by the addition of 0.5 to 2 weight percent of an oximosilicon compound.

Abstract: A method and apparatus for determining surface characteristics of a layer (e.g. anodised aluminum) by measuring electrical impedance thereof and solving specified equations.

Abstract: A room temperature-curing silicone elastomer composition which has excellent workability before curing and forms a silicone elastomer after curing which exhibits low modulus and high elongation. This composition contains a hydroxyl-capped polydiorganosiloxane, a siloxane chain extender of the formulaR.sup.1 (R.sup.2.sub.n R.sup.3.sub.(3-n) SiO)Si(OR.sup.4).sub.2in which R.sup.1, R.sup.2, and R.sup.3 are aliphatic monovalent hydrocarbon groups, R.sup.4 is a hydrocarbon group having from 1 to 8 carbon atoms per group, and n is 0 or 1, an alkoxysilane crosslinker, and a curing catalyst.

Abstract: A curable organopolysiloxane composition which cures freely, uninhibited by moisture or heat, and the cured silicone substance formed has excellent adhesive strength to various substrates when cured in contact with them. The curable organopolysiloxane composition 100 parts by weight of an organopolysiloxane mixture of an alkoxy-organopolysiloxane with a viscosity at 25.degree. C. of 0.02-1,000 Pa.s and at least two silicon-bonded alkoxy groups in each molecule and an alkenyl-organopoly-siloxane with a viscosity at 25.degree. C. of 0.02-1,000 Pa.s and at least two silicon-bonded lower alkenyl groups in each molecule; an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms in each molecule and in an amount such that there are 0.3-5 mols silicon-bonded hydrogen atom per one mol of the silicon-bonded lower alkenyl groups in the composition; 0.1-20 parts by weight of an alkoxysilane represented by the following formula or its partial hydrolysis condensateR.sup.1.sub.a Si(OR.sup.2).sub.

Abstract: A method for manufacturing, with high yield and without accompanying depolymerization, an organosilicon polymer with double-ended functionality which contains a bond between a silicon atom and a hydrogen atom or an alkenyl group at both ends of the molecular chain. The organosilicon polymer with double-ended functionality is expressed by the general formula:R.sup.3 R.sup.1.sub.2 SiO(R.sup.1.sub.2 SiO).sub.p R.sup.1.sub.2 Si {R.sup.4 R.sup.1.sub.2 SiO(R.sup.1.sub.2 SiO).sub.m SiR.sup.1 .sub.2 }.sub.n R.sup.3.wherein R.sup.1 is a C.sub.1-10 monovalent hydrocarbon group that does not contain an aliphatic unsaturated bond, R.sup.2 is a C.sub.2-10 alkenyl group, R.sup.3 in the same molecule is either only a hydrogen atom or only a C.sub.2-10 alkenyl group, R.sup.4 is a C.sub.2-10 alkylene group, m is an integer equal to or greater than 0, n is a positive integer and p is an integer equal to or greater than 0. This method is an addition polymerization of a diorganosiloxane expressed by the general formulaR.sup.3 R.

Abstract: Bubble formation observed when curing a sealant composition on a hot porous substrate is reduced where the room temperature vulcanizable silicone sealant composition comprises a polydiorganosiloxane, a crosslinker with silicon-bonded alkoxy groups, filler, and a titanium catalyst by the addition of 0.5 to 2 weight percent of an oximosilicon compound.

Abstract: A method for bonding substrates with silicone rubber substantially shortens the setting time and provides good bonding of the substrates with silicone rubber using a silicone rubber composition comprised of a thermal-crosslinking component and moisture-crosslinking component. The silicone composition is applied to a substrate, heated to give a silicone gel, subsequently brought into contact with another substrate, and is followed by moisture crosslinking to form a silicone rubber.

Abstract: A method for bonding substrates with silicone rubber substantially shortens the setting time and provides good bonding of the substrates with silicone rubber using a silicone rubber composition comprised of a thermal-crosslinking component and moisture-crosslinking component. The space between two substrates is filled and the composition is heated to give a silicone gel followed by moisture crosslinking to form a silicone rubber.

Abstract: Vinyl- and alkoxy-functional organosilicon compounds with the general formula ##STR1## in which R denotes C.sub.1 and C.sub.4 alkyl and a is 1, 2, or 3, b is 0 or 1, and a+b is 2 or 3 are made by an exchange reaction between sym-divinyltetramethyldisiloxane and vinyltrialkoxysilane or tetraalkoxysilane. These novel vinyl- and alkoxy-functional organosilicon compounds exhibit a high condensation reactivity with the silanol group.

Abstract: The introduction of a room-temperature-curable organopolysiloxane composition that exhibits tack during the course of its cure and that forms a cured product strongly adherent to a variety of substrates when cured while in contact with substrate. Also, the introduction of a method for the preparation of this room-temperature-curable organopolysiloxane composition.

Abstract: A continuous static polymerization reactor for the production of liquid polymers comprises an elongated hollow reaction chamber (30) which has a porous wall (31) and a jacket means (40) spaced around the reaction chamber (30), which is provided with means (44) for introducing a fluid through the porous wall (31). The reactor is particularly useful for a process for making liquid polymers by condensing monomers and/or oligomers. It comprising the use of a pressurized gas to cause the reaction mixture to reach a foam consistency. This is beneficial in the condensation polymerization. Feeding a fluid through the porous wall into the reaction chamber avoids build up of the polymer on the wall.